/**
 * UGENE - Integrated Bioinformatics Tools.
 * Copyright (C) 2008-2020 UniPro <ugene@unipro.ru>
 * http://ugene.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#ifndef _U2_PLUGINSUPPORT_IMPL_
#define _U2_PLUGINSUPPORT_IMPL_

#include <QDir>
#include <QLibrary>
#include <QProcess>

#include <U2Core/PluginModel.h>
#include <U2Core/Task.h>
#include <U2Core/global.h>

#include "PluginDescriptor.h"

namespace U2 {

class ServiceRegistryImpl;
class AddPluginTask;
class RemovePluginTask;

class PluginRef {
public:
    PluginRef(Plugin *_plugin, QLibrary *_library, const PluginDesc &desc);

    ~PluginRef();

    Plugin *plugin;
    QLibrary *library;
    PluginDesc pluginDesc;
    bool removeFlag;
};

class U2PRIVATE_EXPORT PluginSupportImpl : public PluginSupport {
    Q_OBJECT

    friend class AddPluginTask;

public:
    PluginSupportImpl();
    ~PluginSupportImpl();

    virtual const QList<Plugin *> &getPlugins() {
        return plugins;
    }

    virtual void setLicenseAccepted(Plugin *p);

    static bool isDefaultPluginsDir(const QString &url);
    static QDir getDefaultPluginsDir();

    PluginRef *findRef(Plugin *p) const;
    PluginRef *findRefById(const QString &pluginId) const;

    virtual bool isAllPluginsLoaded() const;

    bool allLoaded;

private slots:
    void sl_registerServices();

protected:
    void registerPlugin(PluginRef *ref);
    QString getPluginFileURL(Plugin *p) const;

    void updateSavedState(PluginRef *ref);

private:
    QList<PluginRef *> plugRefs;
    QList<Plugin *> plugins;
};

class VerifyPluginTask;
class AddPluginTask : public Task {
    Q_OBJECT
public:
    AddPluginTask(PluginSupportImpl *ps, const PluginDesc &desc, bool forceVerificatoin = false);
    void prepare();
    ReportResult report();

private:
    bool verifyPlugin();
    void instantiatePlugin();

    QScopedPointer<QLibrary> lib;
    PluginSupportImpl *ps;
    PluginDesc desc;
    bool forceVerification;
    bool verificationMode;
    VerifyPluginTask *verifyTask;
};

class VerifyPluginTask : public Task {
    Q_OBJECT
public:
    VerifyPluginTask(PluginSupportImpl *ps, const PluginDesc &desc);
    void run();
    bool isCorrectPlugin() const {
        return pluginIsCorrect;
    }
    const PluginDesc &getPluginDescriptor() const {
        return desc;
    }

private:
    PluginSupportImpl *ps;
    PluginDesc desc;
    int timeOut;
    QProcess *proc;
    bool pluginIsCorrect;
};

class LoadAllPluginsTask : public Task {
    Q_OBJECT
public:
    LoadAllPluginsTask(PluginSupportImpl *ps, const QStringList &pluginFiles);
    void prepare();
    ReportResult report();

private:
    void addToOrderingQueue(const QString &url);

    PluginSupportImpl *ps;
    QStringList pluginFiles;
    QList<PluginDesc> orderedPlugins;    // plugins ordered by desc
};

}    // namespace U2

#endif
